Nutrition for Health, Fitness & Sport 10th Edition by Melvin Williams ,Dawn Anderson,Eric Rawson

تمرين 6

Research generally supports the theory that caffeine may enhance performance in long-distance endurance events. Which of the following is the least likely hypothesis?
A) It may exert a psychological stimulating effect.
B) It stimulates the release of epinephrine from the adrenal gland.
C) It decreases the use of both free fatty acids and muscle glycogen.
D) It may decrease the perception of effort during exercise.
E) It may exert a direct effect on the muscles to increase muscle contractile force.